Euploca humilis (L.) Feuillet, 2016

Feuillet, Christian, 2016, Two new combinations in Euploca Nutt. (Heliotropiaceae, Boraginales) and a conspectus of the species of the Guiana Shield area, PhytoKeys 61, pp. 101-124 : 102

Euploca humilis (L.) Feuillet comb. nov.

Tournefortia humilis L., Sp. Pl.: 141. 1753. Type. " Tournefortia foliis lanceolatis " pl. by Plumier, in Burman, Pl. Amer., 224, t. 227, f. 2. 1760 (lectotype designated by Miller in Cafferty and Jarvis 2004, pg. 804). Epitype: FRANCE. Martinique: Case Pilote, Feb 1868, L. Hahn 416 (designated by Miller in Cafferty and Jarvis 2004, pg. 804: BM n.v.).

Type.

Based on Tournefortia humilis L.

Notes.

When Melo and Semir (2009: 289) transferred Heliotropium ternatum Vahl (1794, 3: 21) to Euploca , they did not cite synonyms and they overlooked the case of Tournefortia humilis L. There had been a doubt about the exact identity of the Linnean species ( Johnston 1949: 136; Förther 1998: 190), but the typification of Tournefortia humilis L. by Miller (in Cafferty and Jarvis 2004: 804) placed clearly that species in the synonymy of Heliotropium ternatum Vahl (non Heliotropium humile Lam.). The epithet of Tournefortia humilis could not be transferred to Heliotropium , but there is no previous Euploca humilis and the priority rule dictates the adoption of the new combination ( McNeill et al. 2012: Art. 11.4).

Because the name Tournefortia humilis L. or/and Heliotropium humile (L.) R.Br. ex Roem. & Schult. (1819, 4: 37; non Lam., 1791: 393) have been used in synonymy ( Johnston 1928: 69; 1949: 135; and especially the recent revision of Heliotropium Förther 1998: 190, 234; and the typification Miller, in Cafferty and Jarvis 2004: 804); because it is a Linnean name; and because the authors of the new combination Euploca ternata ( Melo and Semir 2009: 289) should have been aware of that name, there are little chances to make a successful proposal to conserve Euploca ternata .